JPH0632163A - Child seat - Google Patents

Abstract

PURPOSE:To prevent the occurrence of lock off condition at the time of shock being added by providing a lock member which is supported rockably on the side of a base member in the condition that the energizing force in lock direction is given at all times. CONSTITUTION:The seat body 4 of a child seat 1 is rocked on the base member 20 installed on the side of a seat for an adult by releasing the lock of the operation lever 34 of a lock member 36, in back and forth direction at the side of the seat body 4. Furthermore, the lock condition is kept by operating the operation lever in necessary reclining posture and fitting the lock part of the lock member 36 into the optional groove of the stopper bracket 32 provided on the side of the seat body 4 and locking it. Accordingly, even if it receives shock, etc., the rotation by the inertia of the lock member 36 having an operation part 34 does not occur, and the lock condition can be maintained steadily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat which is attached and held to an adult vehicle seat by an adult seat belt and is suitable for seating and protecting an infant or the like, and more particularly to a reclining operation of the child seat. The present invention relates to an improvement of a child seat that is made possible.

[0002]

2. Description of the Related Art As a child seat of this type, various structures have been proposed in the past, for example, Japanese Utility Model Publication No. 57-2197 and Japanese Utility Model Publication No. 60-27065. That is, this type of child seat generally includes a resin seat body formed in a substantially bucket shape including a stool portion and a backrest portion. Further, this seat body is provided with a belt insertion hole formed behind both side portions of the stool portion on the lower back side of the backrest portion and the like, and these adult belt seat holes are provided in these belt insertion holes. By being inserted and hooked, it is configured so that it can be placed and held forward or backward on an adult vehicle seat.

By the way, in recent years, there has been a demand for a child seat of this kind to be constructed so that the entire seat body can be swung on an adult vehicle seat so as to be in a so-called reclining state. Separately, various proposals have been made in which a base member that swingably supports the seat body is used, and the base member is placed on the adult seat side.

For example, as shown in FIGS. 4 and 5, a seat body 102 of a conventional child seat 101 has a base member 103 having an internal space 104 formed in the center thereof, and a rotating shaft 1.
An adjustment fitting 111 having a plurality of locking grooves 109 is pivotally supported by a seat frame 107 of a seat body 102, and is rotatably supported by a member 06, and is engaged with a front arm of a base member 103 through an adjustment hole 113. The shaft 115 is inserted.

The seat body 102 can be adjusted for reclining by selectively engaging the engagement groove 109 of the adjustment fitting 111 with the engagement shaft 115 by operating the operation lever 117. Further, the spring 120 biases the adjustment fitting 111 in a direction in which the locking groove 109 and the engagement shaft 115 are engaged with each other.

According to this structure, the child seat is placed in the reclining state,
This allows the infant to be seated in an upright position, which can ensure a stable sitting state of the infant, and also has the advantage that the driver can appropriately and surely grasp the sitting situation of the infant. .

[0007]

However, the conventional reclining child seat 10 as described above is used.
1, the seat body 1 on the base member 103, for example.
In the lock adjusting mechanism for locking the reclining posture when 02 is pivotally supported in an arbitrary state,
It is causing problems from a practical point of view.

That is, in the above-described conventional reclining type child seat 101, the adjustment fitting 111 having the locking grooves 109 of a plurality of steps as the lock adjustment member is pivotally supported on the seat body 102 side, and The adjustment fitting 111 is biased in the locking direction by a spring 120, and an operating lever 117 for unlocking the adjustment fitting 111 is additionally provided. On the other hand, an engagement shaft 115 that engages with one of the locking grooves 109. Was fixed to the base member 103.

In such a structure, since the adjustment fitting 111 for locking the seat body 102 side is made of a metal plate material and has a certain weight, the vehicle is impacted when the child seat 101 is used. When such a force is applied, the moment of inertia thereof acts strongly, and this action force may cause the adjustment fitting 111 to rotate against the urging force of the spring 120, and the locked state may be released. In particular, depending on the situation at the time of this impact, the engagement shaft 115 may come off the locking groove 109 of the adjustment fitting 111,
Moreover, there is a risk of causing a so-called lock-off state in which it is locked at a position where it is difficult to lock again, which is a problem from the viewpoint of safety.

That is, in order to solve such a problem, it is sufficient to increase the above-mentioned spring force, but if this is done, the operating force at the time of the lock adjusting operation becomes heavy, which causes a problem in terms of operability. Therefore, it is necessary to take some measures to eliminate such a defect. Further, in the above-mentioned conventional device, the operation lever 117 provided on the adjustment fitting 111 for performing the unlocking operation is configured to be operated from the lower front surface of the seat portion of the child seat 101, and the child seat 101 Depending on the orientation of the seat on the adult seat, there is a problem in terms of operability, and it is necessary to consider such a point.

The present invention has been made in view of the above circumstances, and in a reclining child seat, it has a lock adjusting mechanism capable of appropriately and surely maintaining a locked state even when it receives an impact or the like. The purpose is to get a child seat.

[0012]

In order to meet such a demand, a child seat according to the present invention has a base member mounted on a seat cushion of a vehicle seat for an adult and a pivot member mounted on the base member. A seat body that is rotatably disposed via a shaft and includes a stool portion and a backrest portion;
A lock adjusting mechanism for locking the seat main body on the base member in a desired rotational posture, and the lock adjusting mechanism is provided at a position different from a pivotal support position of the rotary shaft under the seat main body. A stopper bracket that is fixed and has a plurality of locking grooves, a lock portion that is engaged in an arbitrary locking groove of the stopper bracket, and an operation lever portion that can be externally operated on the side of the seat body, and is always locked. And a lock member swingably supported on the base member side in a state in which a biasing force in the direction is applied.

[0013]

According to the present invention, the operation lever portion of the lock member is unlocked in the seat body side portion in the seat front-rear direction, so that the seat body of the child seat is mounted on the base member installed on the adult seat side. By allowing the rocking operation and operating the operation lever portion in a required reclining posture, the lock portion of the lock member is locked by being engaged with an arbitrary locking groove of the stopper bracket provided on the seat body side. , You can keep the lock.
Even if a shock or the like is received, the lock member having the operation lever portion does not rotate due to inertia, and the locked state can be reliably maintained.

[0014]

1 to 3 show an embodiment of a child seat according to the present invention. In these drawings,
First, a child seat generally designated by reference numeral 1 is provided with a resin seat body 4 formed in a substantially bucket shape including a seat portion 2 and a backrest portion 3. Here, 4a in FIG. 3 is a styrofoam material to be covered on the sheet body 4,
Reference numeral 4b is a skin material that covers the surface of the seat body 4, and is formed in substantially the same shape as the seat body 4. However, the details are well known, and the following description will be collectively referred to as the seat body 4.

An emergency lock type retractor 5 is arranged at the bottom of the seat body 4, and a pair of retractor belts 6 and 6 drawn out from the retractor 5 serve as a safety belt for restraining an infant. Shoulder belt 7,
7 has a plurality of insertion holes 7 on the left and right formed in the backrest 3.
a, 7a is pulled out to the front side of the main body 4, and the left and right shoulder belts 7, 7 are joined in a substantially Y shape.
A chest pad 8 for protecting an infant is attached to the confluence portion so as to wrap it, and a tongue 9a that is detachably inserted into a buckle 9 provided on the front side of the stool portion 2 is attached. ing. In addition, 8a in FIG.
Is a cover for covering the chest pad 8.

Although not shown in the drawings,
The child seat 1 is mounted on a seat cushion of an adult vehicle seat in a front or rear direction, and is hooked and held by an adult seat belt. Here, in the seat body 4 of the child seat 1, an insertion portion for the adult seat belt is provided on the back side of the backrest portion 3 or a part of the stool portion 2, the details of which are well known, and The description will be omitted.

According to the child seat 1 of the present invention, as is apparent from FIGS. 1 (a) and 1 (b), FIG. 2 and FIG. 3, the seat cushion is a vehicle seat for adults. It comprises a base member 20 placed on the base member 20 and a seat body 4 movably arranged on the base member 20 and comprising a stool portion 2 and a backrest portion 3. The seat body 4 includes the stool portion 2 Of the rotary shaft 2 that is rotatably supported on the base member 20 via brackets 21 and 21 at the rear of the
It is supported by the base member 20 so as to be capable of reclining.

Further, a lock adjusting mechanism 30 for locking the seat body 4 on the base member 20 in a desired rotational position between the seat member 4 and the base member 20 on the bottom front side of the seat 2 of the seat body 4. Is provided.

The present invention is based on this lock adjusting mechanism 3
0 on the lower side of the seat portion 2 of the seat body 4 for the rotating shaft 22
A stopper bracket 32 fixed to a position different from the shaft support position by a bolt or the like and having a plurality of locking grooves 31.
32 (a pair of right and left is provided, but only one is shown in FIG. 3), and a lock portion 33 engaged with an arbitrary locking groove 31 of the stopper brackets 32 and 32 and a side portion of the seat body 4. Externally operable control levers 34, 3
4 and a lock member 36 which is swingably supported on the base member 20 side in a state in which a biasing force in the locking direction is always applied by the torsion coil springs 35, 35. Have

In the figure, reference numerals 36a and 36a denote support portions around which the torsion coil springs 35 and 35 are wound and which are swingably supported by support brackets 37 and 37 fixedly provided on the base member 20 side. Is. Reference numeral 34a in the drawing denotes an operation member provided on the operation lever portion 34. Further, in this embodiment, the stopper bracket 32 has three locking grooves 31.
Is formed so that the seat body 4 can be reclined in three postures.

With such a structure, the seat body 4 of the child seat 1 is mounted on the base member 20 installed on the adult seat side by unlocking the operating lever portions 34, 34 of the lock member 36. Can be swung, and the operation lever portion 3 can be moved in a desired reclining posture.
4, 34 are operated in the seat front-rear direction on the side portion of the seat body 4, and the lock portion 33 of the lock member 36 is provided on the seat body 4 side by the urging force of the torsion coil springs 35, 35. The locked state can be maintained by engaging and locking the locking groove 31. Here, in FIG. 2, the seat body 4 is placed on the seat with the front facing forward, and if the operation lever portion 34 is operated toward the seat rearward direction indicated by B in the drawing, the lock portion 33 is disengaged from the locking groove 31. The lock is released, and the lock is activated by operating the front of the seat (F in the figure).

Therefore, in such a structure, even if a shock or the like is received, the lock member 3 having the operation lever portions 34, 34 is provided.
Since 6 is made of a rod-shaped material and is configured so that the influence of inertia is small, the conventional rotating phenomenon due to a large moment of inertia does not occur,
The lock-off state is less likely to occur, and the lock state can be reliably maintained. Further, the operation lever portions 34 and 35 of the lock member 36 are rotatable front and rear of the seat on the side portion of the seat body 4, which is excellent in terms of operability. In particular, in such a structure, the operation of the operation lever portion 34 is not limited to the direction of the child seat 1 and can be easily performed, and the engagement between the locking groove 31 and the lock portion 33 is difficult to come off. Further, according to the above-described configuration, the stopper bracket 32 is provided not on the base member 20 side but on the seat body 4
Since the base member 20 is fixedly provided on the side bottom, the base member 20 can be formed thin, the appearance is improved, and the strength of the seat body 4 side is increased.

The present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part of the child seat 1 can be appropriately modified or changed as necessary, and various modifications can be considered. .

[0024]

As described above, according to the child seat according to the present invention, the seat having the base member placed on the adult seat side and the movably disposed upper portion and the stool portion and the backrest portion. A main body and a lock adjusting mechanism that locks the seat main body on the base member in a desired rotational posture, and the lock adjusting mechanism is fixed to the lower side of the seat main body at a position different from the pivotal support position of the rotary shaft. And a locking bracket having a plurality of locking grooves, a lock portion engaged with an arbitrary locking groove of the stopper bracket, and an operation lever portion that can be externally operated on the side of the seat body, and always has a locking direction. Since it is configured by a lock member that is swingably supported on the base member side while being applied with a biasing force to It is possible to prevent the occurrence of a lock-off state when a shock is applied, which has a small number of component parts, is easy to assemble and cost, and can perform the required reclining adjustment operation, and that operation is easy. There are various excellent effects. Further, there is also an advantage that the lock and unlock can be performed and the operation can be easily performed only by rotating the operation lever portion of the lock member forward and backward of the seat on the side portion of the seat body.

[Brief description of drawings]

1 shows an embodiment of a child seat according to the present invention, (a) is a schematic side view, and (b) is a schematic front view showing only the main part thereof.

FIG. 2 is an enlarged schematic view showing a lock adjusting mechanism characterizing the present invention.

FIG. 3 is an exploded perspective view showing a schematic configuration of the entire child seat according to the present invention.

FIG. 4 is an exploded perspective view of a conventional child seat.

FIG. 5 is a side view illustrating a conventional child seat.

[Explanation of symbols]

 1 Child Seat 2 Seating Part 3 Backrest Part 4 Seat Body 20 Base Member 21 Bracket 22 Rotating Axis 30 Lock Adjusting Mechanism 31 Locking Groove 32 Stopper Bracket 33 Lock Part 34 Operation Lever 34a Operation Member 35 Torsion Coil Spring 36 Lock Member 36a Support Part 37 Support bracket

Claims (1)

[Claims] 1. A child seat mounted on a seat cushion of an adult vehicle seat and attached and held by an adult seat belt, comprising a base member mounted on the adult seat cushion. A seat body rotatably disposed on the base member via a pivot shaft and comprising a seat portion and a backrest portion, and the seat body is locked on the base member in a desired rotation posture. A stopper bracket having a plurality of locking grooves, the lock adjusting mechanism being fixed to the lower side of the seat body at a position different from the pivotal support position of the rotating shaft; The stopper bracket has a lock portion that is engaged in an arbitrary locking groove and an operation lever portion that can be externally operated on the side portion of the seat body, and is always in the lock direction. Child seat, characterized by being configured by a locking member that is pivotally supported on the base member side in a state in which the given force.